Magic Cube

///////////////////////////////////////////////////////////////////////////////////////////////////

// this implements the fact that certain cubits have multiple 'centers' and this means the cubit

// might span more than one layer along a given axis - i.e. that this is a bandaged puzzle.

  int computeBitmapFromRow(int rowBitmap, int axis)

    {

    int bitmap, initBitmap=0;

    while( initBitmap!=rowBitmap )

      {

      initBitmap = rowBitmap;

      for(int cubit=0; cubit<NUM_CUBITS; cubit++)

        {

        bitmap = CUBITS[cubit].mRotationRow[axis];

        if( (rowBitmap & bitmap) != 0 ) rowBitmap |= bitmap;

        }

      }

    return rowBitmap;

    }